Attachment_4_-_SPECIFICATIONS_7PA6J00743.pdf

STATE OF CALIFORNIA - NATURAL RESOURCES AGENCY Gavin Newsom, Governor

DEPARTMENT OF FORESTRY AND FIRE PROTECTION

P.O. Box 944246

SACRAMENTO, CA 94244-2460

(916) 653-7772

IFB #7PA6J00743

Electronic Control-Unit Assembly Attachment #4 - Specifications

Table of Contents

Table of Contents

1.0 SCOPE

2.0 TECHNICAL REQUIREMENTS

CAL FIRE

10/1/2026

1.0 SCOPE

This specification describes the minimum requirements of an Electronic Control-Unit Assembly.

The Electronic Control-Unit Assembly performs supervisory engine-management functions within the turbine-engine control subsystem of the S70i Sikorsky aircraft. The module receives and processes engine-parameter inputs and provides digital control-output signals to support proper fuel-metering control, engine responsiveness, and operational stability. It functions as part of the aircraft’s closed-loop electronic supervisory architecture and is designed as a replaceable avionics-grade module within the engine-control equipment set.

Available technical information indicates that the component is part of an enhanced digital electronic-control configuration that supports supervisory and monitoring functions without relying on hydromechanical control logic. The assembly operates as an enclosed electronic unit compatible with turbine-engine supervisory requirements and integrates electrically with existing aircraft interface connectors using aviation-standard attachment and signal practices. The unit shall install without requiring proprietary OEM installation instructions.

2.0 TECHNICAL REQUIREMENTS

Performance Requirements

The Electronic Control-Unit Assembly must be equal or comparable to Part Number 4155T12P10 for the S70i Sikorsky aircraft, and:

• Provide digital supervisory-control outputs suitable for maintaining stable turbine-engine operation throughout normal aircraft operating conditions, including transition ranges and steady-state power levels.

• Process multiple engine-sensor inputs with adequate update responsiveness to support timely supervisory adjustments that prevent unstable fuel-metering behavior or inconsistent engine response.

• Maintain reliable performance under environmental conditions typical of helicopter turbine-engine installations, including vibration, thermal exposure, and airflow e�ects within the engine-bay area.

• Support electrical compatibility with aircraft-standard power-input systems and digital-signal pathways without requiring modification to existing wiring or aircraft interfaces.

• Demonstrate stable electronic behavior with no intermittent operation, uncontrolled signal fluctuations, or degraded supervisory outputs under normal aircraft operating conditions.

No quantitative test parameters, numerical thresholds, or OEM-exclusive performance data are required or permitted in this IFB.

CAL FIRE

10/1/2026

Physical Requirements:

The Electronic Control-Unit Assembly must be equal or comparable to Part Number 4155T12P10 for the S70i Sikorsky aircraft, and:

• Be supplied as a sealed electronic module appropriate for aviation turbine-engine supervisory installations.

• Include a rigid enclosure capable of tolerating exposure typical of an aircraft engine-bay environment, including continuous vibration, elevated temperature, airflow, and moisture-resistant conditions.

• Provide mounting provisions that allow secure attachment using standard aircraft fastener practices and that maintain structural integrity under normal turbine-engine dynamic loads.

• Include one or more aviation-grade multi-pin connectors compatible with aircraft-standard harness interfaces, capable of maintaining secure retention and reliable electrical contact during normal operational vibration and engine response cycles.

• Include visible exterior markings identifying part number, traceability data, and manufacturer information without reliance on proprietary formatting or artwork.

• Be free of cracks, corrosion, warping, contamination, moisture intrusion, or other conditions affecting serviceability or functional integrity upon delivery.